Sea surface temperature evolution of the North Atlantic Ocean across the Eocene–Oligocene transition

Śliwińska, Kasia K.; Coxall, Helen K.; Hutchinson, David K.; Liebrand, Diederik; Schouten, Stefan; de Boer, Agatha M.

doi:https://doi.org/10.5194/cp-19-123-2023

Articles | Volume 19, issue 1

https://doi.org/10.5194/cp-19-123-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/cp-19-123-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 1

Research article

|

13 Jan 2023

Research article |

| 13 Jan 2023

Sea surface temperature evolution of the North Atlantic Ocean across the Eocene–Oligocene transition

Kasia K. Śliwińska, Helen K. Coxall, David K. Hutchinson, Diederik Liebrand, Stefan Schouten, and Agatha M. de Boer

Supplement

https://doi.org/10.5194/cp-19-123-2023-supplement

Data sets

Data set to: Sea surface temperature evolution of the North Atlantic Ocean across the Eocene-Oligocene Transition Kasia K. Śliwińska https://doi.org/10.22008/FK2/FW9WFV

Model code and software

Sea surface temperature evolution of the North Atlantic Ocean across the Eocene-Oligocene Transition - model data David K. Hutchinson, Agatha M. de Boer https://doi.org/10.17043/hutchinson-2022-eocene-oligocene-1

Short summary

We provide a sea surface temperature record from the Labrador Sea (ODP Site 647) based on organic geochemical proxies across the late Eocene and early Oligocene. Our study reveals heterogenic cooling of the Atlantic. The cooling of the North Atlantic is difficult to reconcile with the active Atlantic Meridional Overturning Circulation (AMOC). We discuss possible explanations like uncertainty in the data, paleogeography and atmospheric CO₂ boundary conditions, model weaknesses, and AMOC activity.